Saba, Turks and Caicos.
Edit: As I think more about it, there aren't any destinations that I am deterred from because I "don't know enough." Certainly none in the Caribbean. I have hopped a flight to Cairns on a day's notice and no research. That was pre-Google. I planned a trip to Papua New Guinea with a few magazines, a few faxes, and a wire transfer, again, pre-Google.
A couple of hours with ScubaBoard, Travelocity, Undercurrent.org, Google, and travel.state.gov, and I am pretty much ready to go anywhere--or decide against going. We have more information at our fingertips now than a traveler twenty years ago could assemble in a week at the library.